Spring adjustment for concentrators



J.. W. McGALLIARD. SPRING ADJUSTMENT FOR CONCENTRATORS. APPLlCATlON'FILI-ID OCT. 5. 191a.

Patented Mar. 1,1921.

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Y To all whom it may concern:

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J'OSEPH W. IECGALLIARD, 033 LOS ANGELES, CALISF'GRNIA, ASSIGIIQB OF ONE- HALF '10 NICHOLAS A. DARCY .1 OF L05 ANGELE$, CALIFORNIA.

SPRING ADJUSTMENT FOR CGNCENTRATORS.

Be it known that I Josnrrr N. MoGAL LIARD, a citizen of the United, States, residing at 7619 lV-hitsett avenue, in the city of Los Angeles, county of Los Angeles. and State ot California, have invented a new and useful Spring Adjustment for Concentrators, of which the following is a specification. I

This invention relates to concentrators comprising a reciprocating table provided with ore separating means on its'surface.

It is customary with tables ofthis character that the same shall be supported on springs that are arranged to yield in the direction of the reciprocation or oscillations of thetable. I

An object of this invention is to provide an improved resilient support for the table whereby the table may be accurately adjusted toany desired level for the purpose of regulating theconcentrating action of the table as it is reciprocated.

Another object is to make provision whereby crystallization of the springs is minimized.

Simplicity. strength and low cost are other objects in view. 1

Apparatus of the kind to which this invention relates requires very delicate adjustment in order to obtain the desired separation and such adjustment is likely tofbe required at every change in the character of the ore which is to be separated by the table and it is important that when said adjustment is made that it will remain as es: tablished without any dangerof disarrangement. Otherwise great losses of value might occur through inattention or overconfidence of theattendant; and an object of my invention is to provide more simple inexpensive and also more effective means for securing and maintaining the adjustment than has heretofore been known; thus to greatly improve the operation of con- Further objects and advantages mayappear from the accompanying drawing, the subjoined detail description and the appended claims.

The accompanying drawing illustrates the invention.

Figure 1. isa side elevation of .a cOncen-Q trator table having adjustable means constructed'ln accordance wlth th1s lnventi on.

one of the adjustments with fragments Specification of Letters Eatent. Pgtgfltgd Mar, 1, 1921, Application filer). October 5, 1918. Serial No. 257,810. r I I Fig. 2 is an end elevation of the table and its supports.

Fig. 3 is an enlarged fragmental transverse elevation of one of the adjustments with portio'nsjoi thetable and base in section on line 00 Fig. 1. .7 F ig. 4 is a tragrnental side elevation of of the table in place. 7 Fig. 5 is a plan section online 2 Fig. 4:. Fig. 6 is a plan section on line :0 Fig. 4. Fig. 7 is an enlarged section on irregular llne w :0 Fig 3. V n

Fig. 8 is an enlarged inverted plan section on line 00 Fig. 7. v 1 indicates concentrator table reciprocatlng' mechanism of a common type connected. as indicated at 2 to reciprocate the table- 3' which is represented as being'iof the type illustrated in my co pending application for patent en ore concentrator, Serial No.

257,811, filed contemporaneously herewith.

The supporting springs 5 are arranged in pairs at several transverse vertical planes of j.

the table, in the usual manner; one member pair being shown in Fig. 2.

5 indicates the hed which supports the entire structure and the same may be made of wooden or other sills ormaybea concrete foundation or any other firm solid construction adapted to sustain the table and its operating mechanism. Any desired form of construction may be employed for the bed 5, Upon said bed are mounted pedestals each formed of a base plate 6 having holes 7 therethrough to receive fastening devices 8. Upon the base plate 6 is mounted an internally threaded seat 9 provided with in- 'ternal threads 10 to receivean adjustable The bore 14: of the socket piece '11 is adapted to receive the substantially vertical cylindrical stem 15 of the swivel spring sup;

19 is inserted; the same being free to slip in-the jaw 17 and screwed into the 18'.

The space 20 between Said'jaws is'ad'apted' port 16 which is provided with two jaws 17 18. through which the clamp bolt or screw g at eithcrtop or bottom c lization.

to receive the lower end of the steel or other spring land also a resilient member or cushion 21, of leather or rubber, arranged so that by tightening'the clamp bolt 19 the spring and cushion are tightly guiipped to gether thus affording a firm but yielding tight and noiseless connection which will. minimize the likelihood of springcrystalhangers or depending bearings 28 that are 'litegralwith the top plates 29 which latter have holes 30 for screws by which they are secured to the table 3.

In practical operation the springs. which may be of any suitable c; ,ss-sectional form, acting against the cushions 21, will he relieved of much of the destructive stress and strain that is likely cause crystallization. nections of the springs. Said springs. are shown as being flat as that form is at present deemed most practical and convenient. It is understood, however, that I do not limit the invention to the speciii'c construction shown.

To adjust the table the appropriate lock nuts 13 will. be loosened, tie threaded soclo ets 12 will be screwed up or dow is may be required to bring the table top t the desired angle or inclination crosswise and endwise and then the lock nuts 13 will be made tight.

By screwing all the sockets 1.2 on one side of thetable, such side may be'raised or lowered accordingly. Lengthwise or endwise slope adjustment may be effected by adjusting such sockets on both sides.

The adjustment oi the table may be made to a minute degree.

hen the table is finally brought required angle.' the set nuts will be tightened and the table is ready for use.

It thus seen that I have providec in combination with a support, comprising the l d 5, and with a concentrator top shown at 3, and with the'springs 4 extending up and down to support the table; adjustable swivel joint connections between the support and the spring ends as at 9. 11. and 16 at one end ol the springn and hinge joint to? nections as at 27, 28, between the table 1 top and the spring ends at the other end oi the springs: and that the lower connections are threaded adjustments whereby the space between the base plate 6, may be adjusted and that such adjustment may then be fixed by setting the jam nut 13 as statechand to the which may be released when it is desired to change the adjustment, so that the'operation of adjusting the level or slant of the table to practically a hairs-breadth so as to eliect thereouired separation, is easy.

It is deemed most satisfactory to arrange the springs below the table in accordance with a common practice, but I do not limit the invention to such arrangement. ..t is also preferable to make the swivel connection at-the end attached to the support and the joint connection at the end attached-to the table this arrangement gives a requisite flexibility and is easily-adjusted.

The plates 2-9 are preferably let into gain 32 inthe side rails 33 of the table top so as to make the connection between the table top and the hanger 28 firm and rigid. Said hangers are short and rigid knuckles or eyes so that the pins or bolts 27 of the lungs allows a certain movement of the springs during the ope tion of the concentrator in order sate for any unevenness the's ing; to produce a torsional mo ement where-- by the durability of the sprii ,4 may be i1upaired. By my arrangement. therefore, the

deleterious effect of such torsional tendency is counteracted, and the durability and the longevity of the springs is thereby maximized.

l claim, p l. A spring adjustment for concentrators comprising a seat provided with internal threads an adjustable, externally threaded socket provided with a longitudinal bore and having a wrench-receiving head and screwed into the threaded seat; a springcarrying support rotatably mounted in said bore and jam nut screwed onto the threaded socket between the wrench head and the seat to'jam upon the seat to preserve a desired adjustment. i V V 2. A spring adjustment .for concentrators comprising a seat provided withinternal threads; an adjustable. externally threaded socket having a wrench receiving head and screwed'into the threaded seat; a jam nut screwed'onto the threaded socket between the wrench head and the seat to jam upon the seat to preserve a desired adjustment; a spring support pivoted on a substantially vertical axis in the socket; and means to clamp a spring to said support.

The combination witha spring, of a swlvel spring support which is provided with two jaws and a clamp bolt or socket free to slip in one or" the jaws and screwed into the other jaw; a cushion between the jaws; the space between said jaws being adapted to receive thecushion and the lower end of the spring; said cushion being arranged so that by tightening the clamp bolt the spring and cushion are tightly clamped together.

4. The combination with a spring of a swivel spring support provided with a substantially vertical, cylindrical stem; a socket for the stem. of the swivel spring support; and means to secure one end of the spring in the spring support.

5. The combination with a spring of a swivel spring support provided with a substantially vertical, cylindrical stem; a socket for the swivel stem of the spring support;

'means to secure one end of the spring in the spring support; a top fixture having downwardly extending jaws; and means to connect the spring to the fixture.

6. The combination with a support a concentrator top, and springs extending up and down-to support the tabletop; of connections between the support and the springs at one end of the springs; and. connections between the table top and the other ends of the springs; the connections at one end of said springs being swivel connections arranged on substantially vertical axis and the connections at the other ends of said springs being hinge connections. I

'7. Th combination with a support,a concentrator table top, and springs extending up and down to support the table top; of swivel joint connections arranged on substantially vertical axes between the support and the spring ends farthest from said table top and hlngejoint connections between the table top and the spring ends nearest to said 1 L top.

S. The combination with asupport, a concentrator table top, and springs extending up and down to support the table top; of

swivel joint connections arranged on substantially vertical axes between the support and the lower ends'of the springs; and hinge joint connections between the table top and the upper ends of the springs.

9. The combination with a support, a concentrator table top, and springs extending up and down to support the'table top; of

swivel joint connections arranged on sub stantially vertical axes between thesupport and-the springs at one end of the springs; hinge joint connections between the table top and the other ends of the springs, said connections comprising cushions; and means whereby the cushions are clamped onto the spring ends. r

10. The combination with a concentrator table top and a base, of a spring extending 

